This is a replacement Schumacher Gear Differential Set. This set includes the necessary parts to assemble one complete gear differential unit. Differential fluid is not included, but the recommended weight is 2000cts.

A gear differential in the rear gives better drive out of a corner and more on power steering than a ball differential, but the ball differential is always easier to drive, and good in low traction conditions.

In the front a spool is the standard choice and the best option for most conditions. A gear differential will give more mid corner steering, but suffer on corner exit. Schumacher uses a gear differential on very tight twisty tracks.